1222956578 has 8 divisors (see below), whose sum is σ = 1837122768. Its totient is φ = 610582324.

The previous prime is 1222956481. The next prime is 1222956589. The reversal of 1222956578 is 8756592221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446276 + ... + 449007.

It is an arithmetic number, because the mean of its divisors is an integer number (229640346).

Almost surely, 2^1222956578 is an apocalyptic number.

1222956578 is a deficient number, since it is larger than the sum of its proper divisors (614166190).

1222956578 is an equidigital number, since it uses as much as digits as its factorization.

1222956578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895968.

The product of its digits is 604800, while the sum is 47.

The square root of 1222956578 is about 34970.7960732952. The cubic root of 1222956578 is about 1069.3922008872.

The spelling of 1222956578 in words is "one billion, two hundred twenty-two million, nine hundred fifty-six thousand, five hundred seventy-eight".